Park, Suk In Trojak, Oliver Joe Lee, Eunhye Song, Jin Dong Kyhm, Jihoon Han, Ilki Kim, Jongsu Yi, Gyu-Chul Sapienza, Luca 2024-01-19T22:34:21Z 2024-01-19T22:34:21Z 2021-09-03 2018-05-18 0957-4484 https://pubs.kist.re.kr/handle/201004/121368 We report on the growth and optical characterization of droplet GaAs quantum dots (QDs) with extremely-thin (11 nm) capping layers. To achieve such result, an internal thermal heating step is introduced during the growth and its role in the morphological properties of the QDs obtained is investigated via scanning electron and atomic force microscopy. Photoluminescence measurements at cryogenic temperatures show optically stable, sharp and bright emission from single QDs, at visible wavelengths. Given the quality of their optical properties and the proximity to the surface, such emitters are good candidates for the investigation of near field effects, like the coupling to plasmonic modes, in order to strongly control the directionality of the emission and/or the spontaneous emission rate, crucial parameters for quantum photonic applications. English IOP PUBLISHING LTD EMISSION GaAs droplet quantum dots with nanometer-thin capping layer for plasmonic applications Article 10.1088/1361-6528/aab2e1 1 NANOTECHNOLOGY, v.29, no.20 NANOTECHNOLOGY 29 20 scie scopus 000428334400001 2-s2.0-85044819516 Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Science & Technology - Other Topics Materials Science Physics Article EMISSION droplet quantum dots growth of nanostructures microphotoluminescence spectroscopy